Atmospheric gas-burner



(No Model.)

' H. J. BELL.

- ATMOSPHERIC GAS BURNER.

No.396,255. Patented Jan. 15, 1889.

Wiifizewwea Invemiar.

M flair/702d Jjezl.

UNITED STATES PATENT EEIcE,

HAROLD J. BELL, OF GLOUCESTER CITY, NEWV JERSEY, ASSIGNOR TO THEWVELSBACH INCANDESOENT GAS LIGHT COMPANY, OF NEXV JERSEY.

ATMOSPHERIC GAS-BURN ER.

SPECIFICATION forming part of Letters Patent No. 396,255, dated January15, 1889. Application filed May 10, 1888. Serial No. 273,455. (Nomodel.)

To all whom it may concern: placed in or upon the upper end of the tubeBe it known that I, HAROLD J. BELL, a citiin order to control thequantity of air admit- Zen of the United States, residing at Gloucestedthrough the inlets 2, and thereby reguter City, in the county of Camdenand State of late the intensity of the flame. An adjust- NewJersey, haveinvented new and useful Imable bell-shaped shield, 4, is supported 011the 5 5 provements in Atmospheric Gas-Burners, of base of theburner-tube 1 in such a manner as which the following is aspecification. to be capable of vertical movement to cover Thisinvention relates to atmospheric gasand uncover the air-inlets 2. Thisshield is burners for incandescent gas-lighting; and it provided at thetop with a neck, 8, the inter- IO consists in the combination of atubeprovided nal diameter of which is equal to the external 60 at or nearits lower end with lateral air-inlets, diameter of the tube 1 and thelength of so located as to allow said tube to be secured which isslightly greater than the diameter of into a base asufiicient distanceto hold it firm the air-inlets 2. The shield is also provided withoutobstructing any part of said air-ininternally with a spiral ring, 5,located at lets, and a vertically-adjustable shield having about itscenter and supported therein at a 65 .a neck adapted to close saidair-inlets or any distance from its walls by means of one or part ofthem at will, a spiral ring being semore arms, 6, so as to afford anair-passage cured to the inner'wall of the shield and conbetween saidring and the walls of the shield centric therewith to engage an externalspiequal in area to the air-inlets 2 in tube 1.

2o ral groove or thread on the above-mentioned The ring 5 engages anexternal screw-thread 7o base, whereby a rotation of the shield will orspiral groove, 7, formed on the base of the cause its adjustment on thetube in an uptube 1, below the lateral air-inlets 2, so that warddirection to partially or wholly expose by rotating the shield in theproper direction the air-inlets (under the shield) for the purits neck 8will cover or uncover the air-inlets pose of admitting alesser orgreater quantity 2, as may be desired. It will be observed 75 of air tobe mixed with the gas before it is that when the shield is raised, asshown in burned, or in a downward direction to abso- 2, a sufficientdistance the air has free lutely close said air-inlets as the nature ofthe access to air-inlets 2, and yet the bottom of gas used may require.said shield hangs far enough below the air- The invention is illustratedin the accominlets 2 to arrest the disturbing influences of 80 panyingdrawings, in which external air-currents, being assisted, more- Figure 1is a perspective view of my imover, by the partial obstruction offeredby the proved atmospheric gas-burner tube with spiral ring 5. shieldlowered to close the air-inlets. Fig. 2 is hat I claim is-- a verticalsection of the same with shield ele- The combination, with anatmospheric gas- 85 vated to expose the air-inlets. Fig. 3 isan burnertube having lateral air-inlets 2 and elevation of the burner-tube andbase with provided with an externally screw-threaded shield detached.Fig. 4 is an inverted plan or spiral-grooved base, 7, of avertically-adof the shield with internal spiral ring. justablebell-shaped shield having a spiral The burner-tube l is provided withthe ring, 5, to engage the external spiral groove 90 usual lateralair-inlets, 2, and beneath these on the base of the burner-tube, and aneck,'8, air-inlets it may have a horizontal finely-perto cover oruncover the lateral air-inlets, s11bforated plate or disk, 3, to dividethe supply stantially as described. of gas into fine currents, wherebyan intimate I11 testimony whereof I affiX my signature in mixture of gasand air can be produced in presence of two witnesses. v

the tube. The base of this tube 1, beneath the perforated disk 3, isinternally screw- HAROLD BELL threaded to engage a gas-fixture. A burnerWVitnesses: tip or spreader of any desired construction GEO. H. BARKER,

5o suitable for incandescent gas-lighting can be 0. SELDEN J OHNSONT

